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This is a genuine Audemars Piguet minute wheel for the Caliber 3120 and 3126 automatic movements, a Swiss‑made original component. As the core of the motion work system, it transmits power from the cannon pinion to the hour wheel, ensuring synchronized movement of the hour and minute hands. This original factory part is the ideal replacement for watchmakers to restore proper hand‑setting function and hand synchronization when servicing Caliber 3120/3126 movements.
Genuine Audemars Piguet Part – Swiss factory‑original for Caliber 3120 and 3126, not a copy.
Motion Work Core – Ensures synchronized hour and minute hand movement and smooth time setting.
Precision Machined – Accurate gear teeth and bore dimensions for smooth engagement.
Essential for Service – Replace when hands are not synchronized, the hour hand is loose or sticky.
Compatible Movements – Designed for Audemars Piguet Caliber 3120 automatic and the 3126/3840 chronograph based on the same platform.
| Parameter | Details |
|---|---|
| Part Name | Minute Wheel |
| Compatible Movements | Audemars Piguet Caliber 3120, 3126/3840 automatic |
| Movement Diameter | 26.60 mm |
| Movement Thickness | 4.26 mm (with module) |
| Jewels | 40 (3120) / 59 (3126/3840) |
| Frequency | 21,600 vph (3 Hz) |
| Power Reserve | Approx. 60h (3120) / 50h (3126/3840) |
| Origin | Switzerland |
| Condition | Brand new, genuine |
Audemars Piguet Caliber 3120 automatic (found in Royal Oak 15300, 15400, 15450; Jules Audemars, etc.).
Audemars Piguet Caliber 3126/3840 automatic chronograph (found in Royal Oak Offshore Chronograph models).
Repair of asynchronous hour/minute hands, loose hour hand, or abnormal setting resistance.
Replacement of worn or deformed minute wheels during movement service.
1. Is this a genuine Audemars Piguet minute wheel?
Yes. It is a Swiss factory‑original part for Caliber 3120 and 3126, not a copy.
2. What are the symptoms of a damaged minute wheel?
Symptoms: rough or asynchronous hour hand movement when setting time; inaccurate hour hand position after setting; crown turns but hour hand does not move.
3. As a chronograph movement, does the 3126 share the same minute wheel as the 3120?
Yes. The 3126 is based on the 3120 with a modular chronograph addition, but the base time‑train (motion work) is identical – the minute wheel is fully interchangeable.
4. What should I pay attention to during installation?
The minute wheel sits between the hour wheel and cannon pinion (or intermediate wheel). Ensure correct meshing with adjacent gears and proper alignment. Professional installation is recommended.
5. Does this minute wheel fit other AP calibers like Caliber 3124?
Different calibers may have different minute wheel dimensions. Caliber 3124 is based on 3120 but verify with the parts diagram for compatibility.
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